Olivier Rousteing brought his knack for modern, louche glamour to the Financial District, hosting a lavish show and performance at 23 Wall Street just opposite the New York Stock Exchange. “I think being a part of this process is so amazing,” said Rousteing, beaming down the red carpet and adding, “When H&M asks you to be a part of it, your vision is going to be global and welcome in so many different countries and in the street.”

Those wanting to take in the 29-year-old’s vision were Alexa Chung, Kylie Jenner (watching big sister Kendall take to the catwalk), Lewis Hamilton, Diane Kruger, Eve Hewson, and countless others. After a brief video that took viewers on the most fashionable train journey highlighting pieces from the collection, the show began after a dance troupe twerked and gyrated on staircases to get the crowd energized.

However, the real surprise came just after Rousteing’s final spin down the catwalk—when the Backstreet Boys took to the stage. It didn’t matter if you were on team Nick or team Brian in the ’90s, all five of the gents sprung to the stage looking “Larger Than Life” belting out all their hits draped in Balmain. The evening clearly hit a high note with singer Ellie Goulding, who said, “I was very lucky I got to wear this,” of her emerald Balmain mini frock and joined by her rock star beau, Dougie Poynter. “The thing I love about myself is my legs and Olivier makes stuff that just works for me.”

After the boy band left the stage, it was time to hit the shopping section, where models including Coco Rocha and Ophélie Guillermand joined the fashion-hungry crowd for the covetable items. But at the core of Rousteing’s show was his army consisting of everyone from Alessandra Ambrosio to Kendall Jenner. With seasons moving so rapidly, does the young talent have his eye on anyone new to add to the ranks? “Of course!” exclaimed Rousteing, before adding cheekily, “But I’m not going to tell you because I don’t want someone to steal them before me!”